
        nav{
            height: 64px;
            display: -webkit-flex;
            display: -moz-flex;
            display: -ms-flex;
            display: -o-flex;
            display: flex;
            justify-content: space-around;
            align-items: center;
            background-color: white;
           
        }
        footer{
            width: 100vw;
            position: fixed;
            bottom: 0;
        }
        iframe{
            width: 100%;
            height: calc(100% - 64px);
        }
        .tpjl{
            width: 25px;
            height: 25px;
            background-image: url(首页/images/spr1.png);
            background-size:100% 800%;
        }
        .icon1{
            background-position: 0 -600%;
        }
        .icon2{
            background-position: 0 -100%;
        }
        .icon3{
            background-position: 0 -300%;
        }
        .icon4{
            background-position: 0 -500%;
        }
        .hdq>a>img{
            width: 50px;
            height: 50px;
        }
        .hdq{
            position: fixed;
            bottom: 80px;
            right: 0;
        }
        a>div:nth-of-type(2){
            color: black;
            position: relative;
            right: 1px;
        }